Drawhead



Feb 27, 1923.

I R. J. STANFIELD.

I DRAWHEAD.

2 SNEETS-SHET 2.

FILED MAR. l6. I922- Patented Feb. 27, 1923.

umrse s f DRAWHEAD;

Application filed March 16, 1922 sens-1 N 5: 5442,2342

T0 aZMvho-m-i-t may concern."

Be it known that Beams JOSIAH STAN- FIE-LI), a citizen of the United States of America, residing Kaufman; in the county of Kaufman and State Texas, has invented new and usei ul- Improvements in Drarwhea'd's, of which the followingis a specification: Y

a The object of the invention is to provide a draw head for car'cou lers ofth'e Janney type wherein a simplified mounting and means forlocking and releasing the knuckle is' provided tofacilitate the" cou lin and uncoupling of cars particularly without in volving the trainuien or operatives in the risk incident" to entering the spacebetween cars; and with this object in view the invention consists in a construction and combination of parts of which a preferred em bodiment is shown in the accompanying drawings, wherein Figure 1 is a side view, and

Figure 2 is a plan view of a pairv of couplers embodying the invention arranged in interlocking or engaged relation.

Figure 3 is a horizontal sectional view of one of the draw heads showing in full lines the locked and in dotted lines the'unlocked or open position of the knuckle.

Figure 4 is a front view, and

Figure 5 is a vertical longitudinal sectional view of two coupled heads.

Figure 6 is a perspective view of one of the knuckles.

Figure 7 is an inverted plan View of a portion of one of the heads to show the knuckle actuating spring.

The draw head 10 as in the well known form of the Janney type of coupler is pro vided with the fixed jaw 11 at one side and the movable jaw or knuckle 12 at the opposite side mounted for swinging movement on a vertical axis by means of a bolt 13 and adapted for swinging movement inwardly or toward the fixed jaw for engagement with the corresponding movable jaw or knuckle of the complemental draw head carried by the adjacent end of the car to be coupled.

The movable jaw or knuckle carries an inwardly extending arm 1& disposed between the planes of the upper and lower surfaces of thecdraw head and adapted for swinging movement in a throat 15 represented by a cut away portion of the body of the draw head, and arranged in intersecting relation witlit he throat is a guide opening 16 for a vertical movable locking'pin' 1'7 projecting below the lower side of thedraw headfor connection with the horizontal arm of a bell crank lever 18' fulcrumed upon the draw head.

, Lama The knuckle carried" arm is provided at its under side with a bevel face 21 andthe upper end of the locking pin is correspondingly'bevelled as shown at 22, soqthat with the parts in the'open or receiving position pressure applied to the" arm by the-entrance into the head of the knuckle or movable aw of an opposing head will in repressing the said arm depress the locking pin sufficiently thus permitting the knuckle to be moved to its engagingor operative position where it openposition by a spring 23 which in the construction illustrated is coiled upon the pivot bolt of the knuckle, and the substantially horizontal arm of the bell crank lever to permitozt the arm passing thereover and is slotted as indicated at 24 to. receive the operating chain 28, extending for example to the side of the car for manipulation by the brakemen ortrainmen without passing between the ends of the cars.

In the construction illustrated the adjacent ends of the operating bell-crank levers are slotted as indicated respectively at 29 and 30 for the reception of a bolt 31 of which the nut 32 may be tightened to. lock the same at any desired adjust-mentin' the slot 30'.

From the above description it will be seen that the looking or the coupling of the device is accomplished automatically by the contact of the knuckle or movable jaw of one head with the knuckle carried arm of the other head, and the re ression of said arm to swing the knuckle w ich carries the same inwardly into engaging relation with the knuckle of the approaching head; and that the unlocking or release of the coupler is accomplished by themovement of the operating lever suflicient to disengage the looking pin from the knuckle carried arm and permit the knuckle actuating spring to throw the knuckle to the release position shown in dotted lines in Figure 3.

Having described the invention, what is claimed as new and useful is l. A coupler having a draw head. of the Janney type wherein the knuckle or movable jaw is provided with an inwardly projecting arm rigid with the knuckleior operating in a throat of the head, a vertically movable locking pin extending upwardly from the lower side of the draw head and yieldingly impelled upward for intersection with the path of movement of the said arm, and means for retracting the pinto release the knuckle and consisting of a spring actuated bell-crank lever having connection with the operating pin and an operating lever mounted upon the draw head and having a pin and slot connection with the bell-crank lever.

2. A coupler having a draw head of the Janney type wherein the knuckle or movable jaw is provided with an inwardly projecting arm rigid with the knuckle for o crating in a throat of the head, a vertical y movable locking pin extending upwardly from the lower side of the draw head and yieldingly impelled upward for intersection with the path of movement of the said arm, and means for retracting the pin to release the knuckle and consisting of a spring actuated bell-crank lever having connection with the operating pin and an operating lever mounted upon the draw head and having a pin and slot connection with the bell-crank lever, said pin and slot connection including longitudinal slots in the adjacent portions of said operating and bell crank levers and a bolt engaging and adjustably mounted in one of said slots and engaged by the other.

In testimony whereof he affixes his signature.

ROBERT JOSIAH sTANFiELD. 

